Despite this, he looms over the lives of his protests. He only chose those he trusted, those who could endure the darkness he dealt with and, even posthumously, represent. It is these protests, the so-called Bat Family — Robin, Nightwing, Batgirl, and Red Hood — that take center stage in WB Games Montreal’s Gotham Knights. All are haunted by the death of their mentor and father figure. Throughout this third-person open world adventure, players switch between any of the four prior to a mission, battling old enemies — and one new one — of the Dark Knight. While the game does a lot right, there is also a lot that holds it back from realizing its full heroic potential.
Curious Black Hole Crash in Deep Space Leaves Astrophysicists Puzzled
Black hole collisions are some of the most extreme phenomena in the universe. As the two massive, invisible bodies spiral toward each other, they disturb the fabric of spacetime, sending out ripples across the universe. Those ripples — gravitational waves — eventually wash over the Earth, where some very sensitive detectors in the US, Italy and Japan can “hear” them.
One such ripple washed over our planet in the early hours of Jan. 29, 2020. It was picked up by the dual detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) in the US and a third detector, Virgo, in Italy. The detectors’ characteristic chirp suggested a pair of black holes, one that was around 40 times the mass of the sun and the other 22 times, had smashed together.
In a new study, published on Wednesday in the journal Nature, researchers examined the wave from this collision, dubbed GW200129, which — when first discovered — showed a peculiar signal. The wave’s chirp seemed to suggest the black holes that crashed into each other were “wobbling” around in their orbit. This wobble is, scientifically, known as “precession,” and it would be the first time we’ve seen this effect in black holes.
However, other gravitational wave scientists aren’t so certain the signal provides proof of this phenomenon. Instead, they have wondered whether the data may be affected by a glitch in one of the gravitational wave detectors that first spotted GW200129.
What’s happening with GW200129?
First, let’s talk about that “wobble.”